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diff --git a/doc/flows/int-pay.tex b/doc/flows/int-pay.tex new file mode 100644 index 000000000..2968c4c2e --- /dev/null +++ b/doc/flows/int-pay.tex @@ -0,0 +1,60 @@ +\section{Pay} \label{sec:pay} + +\begin{figure}[h!] + \begin{sequencediagram} + \newinst{wallet}{\shortstack{Customer wallet \\ + \\ \begin{tikzpicture} + \node [fill=gray!20,draw=black,thick,align=center] { Unique \\ Wallet ID}; + \end{tikzpicture} + }} + \newinst[1]{merchant}{\shortstack{Merchant \\ + \\ \begin{tikzpicture}[shape aspect=.5] + \tikzset{every node/.style={cylinder,shape border rotate=90, draw,fill=gray!25}} + \node at (1.5,0) {\shortstack{{{\tiny Database}}}}; + \end{tikzpicture} + }} + \newinst[1]{exchange}{\shortstack{Taler (exchange) \\ + \\ \begin{tikzpicture}[shape aspect=.5] + \tikzset{every node/.style={cylinder,shape border rotate=90, draw,fill=gray!25}} + \node at (1.5,0) {\shortstack{{{\tiny Database}}}}; + \end{tikzpicture} + }} + \newinst[1]{bank}{\shortstack{Merchant bank \\ + \\ \begin{tikzpicture} + \node [fill=gray!20,draw=black,thick,align=center] {Commercial \\ Accounts}; + \end{tikzpicture} + }} + \postlevel + \mess[0]{wallet}{Browse catalog}{merchant} + \mess[0]{merchant}{Commercial offer}{wallet} + \begin{callself}{wallet}{Review offer}{} + \end{callself} + \mess[0]{wallet}{Pay {(Coins)}}{merchant} + \mess[0]{merchant}{Deposit {(Coins)}}{exchange} + \begin{sdblock}{Acceptable account?}{} + \mess[0]{exchange}{{Refuse deposit}}{merchant} + \mess[0]{merchant}{{Refund purchase}}{wallet} + \end{sdblock} + \mess[0]{exchange}{{Confirm deposit}}{merchant} + \mess[0]{merchant}{Fulfill order}{wallet} + \begin{callself}{exchange}{Aggregate transactions}{} + \end{callself} + \begin{sdblock}{KYC/AML required?}{} + \begin{callself}{exchange}{Figures~\ref{fig:proc:kyc}, \ref{fig:proc:aml}}{} + \end{callself} + \end{sdblock} + \mess[0]{exchange}{{Initiate transfer}}{bank} + \end{sequencediagram} + \caption{Payments from a customer to merchant result in + depositing coins at the Taler exchange (payment service provider) + which then credits the merchant's bank account. + The KYC/AML checks are described in Section~\ref{sec:kyc:deposit}} + \label{fig:int:pay} +\end{figure} + +{\bf Internal note:} The exchange refusing a deposit immediately based on +unaccaptable merchant accounts may not be fully implemented (this is a very +recent feature, after all); especially the merchant then automatically +refunding the purchase to the customer is certainly missing. However, +the entire situation only arises when a merchant is incorrectly configured +and in violation of the terms of service. |